DIGA DI WOLF CREEK: RAGGIUNTO IMPORTANTE TRAGUARDO CON IL COMPLETAMENTO DEL DIAFRAMMA DI PROTEZIONE IN CALCESTRUZZO

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1 DIGA DI WOLF CREEK: RAGGIUNTO IMPORTANTE TRAGUARDO CON IL COMPLETAMENTO DEL DIAFRAMMA DI PROTEZIONE IN CALCESTRUZZO Cesena, 03 luglio 2012 La divisione TREVI, specializzata nei servizi di ingegneria del sottosuolo, attraverso la propria controllata estera TREVIICOS Inc. in JV con un partner strategico, ha raggiunto un importante traguardo con l istallazione dell ultimo pannello rettangolare da fresa n. 433 del muro di protezione della Diga di Wolf Creek. I lavori eseguiti s inseriscono nel ampio progetto di consolidamento della diga nel distretto di Nashville nel Kentucky in USA commissionato dal Genio Militare delle Forze Armate degli Stati Uniti. Questo comunicato fa seguito all importante riconoscimento reso noto dal US Corps of Engineers in appendice al documento. Il completamento del muro di contenimento segna un importante passo avanti verso la fase finale del progetto che consta della costruzione della barriera principale. Il diaframma continuo di protezione è largo circa 2 metri, profondo 90 metri e poggia sulla roccia arenaria che si estende sulla parte est della diga lungo l invaso fino alla spalla destra per una lunghezza totale di circa 1,300 metri. La costruzione del muro di contenimento è stata necessaria per la messa in sicurezza del corpo diga indispensabile nella fase di realizzazione del diaframma principale. Il perfezionamento dei lavori è avvenuto in assoluta sicurezza nonostante la complessità del progetto e la necessità di coordinare scrupolosamente un ingente quantitativo di attrezzature speciali sulle piattaforme operative. Lavori sulla piattaforma Wolf Creek L esecuzione dei lavori relativi alla realizzazione del muro principale continua regolarmente con oltre il 70 percento dei pali secanti istallati ad una profondità di circa 90 metri. TREVIICOS ha inoltre raggiunto un altro record molto importante superando complessivamente oltre 920,000 ore senza incidenti. Tale raggiungimento rappresenta un primato di assoluto rilievo sia per la portata che per la difficoltà del lavoro di Wolf Creek, che rappresenta ad oggi il più grande e complesso progetto di consolidamento di dighe al mondo. TREVI Finanziaria Industriale S.p.A. Via Larga, Cesena (FC) (Italia) Tel Fax E mail trevifin@trevifin.com sito internet Capitale sociale Euro ,00 Int. Vers. Registro Imprese Forlì Cesena, Codice Fiscale e Partita IVA: C.C.I.A.A. R.E.A. n

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3 Release For Immediate Release June 22, 2012 Contact: Bill Peoples, Milestone reached with completion of protective concrete embankment wall at Wolf Creek Dam JAMESTOWN, Ky. (June 22, 2012) The U.S. Army Corps of Engineers Nashville District reached a major milestone here this week at the Wolf Creek Dam Foundation Remediation Project when work crews installed the 433rd and final panel in completing the protective concrete embankment wall. While this wall does not create a water barrier through the dam s karst limestone foundation, it completes a major stage of construction that is critical to the final stage of construction the main barrier wall, which is scheduled to be completed by December The PCEW is a six-foot wide and up to 230 foot deep concrete wall through the dam s clay embankment down to top of rock. It extends 3,800 feet along the length of the embankment. Its purpose is to protect the embankment while the main barrier wall is being constructed. The PCEW was one of several complicated components on the project and its safe completion without any major complications is a significant achievement. Bill DeBruyn, resident engineer, said the entire Wolf Creek team has been working hard to reach this milestone. They felt a tremendous and well-deserved sense of accomplishment when the last concrete was placed for the PCEW, he said. Our contractor continues to work two shifts a day, six days a week in an effort to complete the project as soon as possible. The contractor, Treviicos-Soletanche Joint Venture, continues to install the main barrier wall and has completed more than 70 percent of the concrete piles that create it. These piles extend up to 275 feet deep through the embankment and well into the limestone to block openings in the rock. The main barrier wall must be completed before Lake Cumberland can be raised back to its normal levels. The contractor achieved another milestone this month when it reached 920,000 man-hours without an accident that would cause a worker to miss time on the job. Nashville District officials said a commitment to safety by Treviicos-Soletanche Joint Venture also contributed to timely completion of the PCEW. The foundation remediation began in 2008 when the Corps took aggressive action to reduce the risk of failure and to effectively cut off seepage through the limestone caused by erosion of the dam s foundation from water pressure in the reservoir. The Corps made an emergency decision in 2007 to maintain the lake at elevation 680 feet. Despite lower lake levels that have been maintained during construction, Lake Cumberland is still the third largest lake in Kentucky, and recreation opportunities for fishing, camping, and water sports remain highly accessible. For more news, information and updates please follow the U.S. Army Corps of Engineers Nashville District on Facebook at and Lake Cumberland at U.S. ARMY CORPS OF ENGINEERS NASHVILLE DISTRICT 801 Broadway, Nashville, Tenn

4 WOLF CREEK DAM: MILESTONE REACHED WITH THE COMPLETION OF THE CONCRETE EMBANKMENT WALL Cesena, 3 rd July 2012 The TREVI division, specialized in ground engineering services, through its foreign subsidiary TREVIICOS Inc. in JV with a strategic partner, reached a major milestone at the Wolf Creek Dam in Nashville, Kentucky with the installation of the 433 rd and final panel of the protective concrete embankment wall. The works carried out are part of the large Foundation Remediation Project of the US Corps of Engineers. This press release follows the important announcement of the milestone reached by the US Corps, enclosed in this document. The completion of the Protective Concrete Embankment Wall (PCEW) finalizes a major stage of construction that is crucial for the final stage of construction of the main barrier wall. The PCEW is a six-foot wide and up to 230 feet deep concrete wall that stems down to the top of the rock extending 3,800 feet along the length of the embankment. The principal purpose is that of protecting the embankment while the main barrier is being built. The safe completion, without any complications, of this particular part of the project represents a major accomplishment both for the technologies and the project management skills employed in coordinating the large number of machinery on the operating platforms. Main platform operations Wolf Creek The installation of the main barrier wall continues and more than 70 percent of the concrete piles have been successfully completed. These piles extend up to 275 feet deep through the embankment and into the limestone to close openings in the rock and cut off seepage. TREVIICOS achieved another milestone this month reaching 920,000 man-hours without an accident. This represents an absolute ground breaking record both for the scope and complexity of this project which represents the largest and most difficult foundation remediation project in the world to this day. TREVI Finanziaria Industriale S.p.A. Via Larga, Cesena (FC) (Italia) Tel Fax E mail trevifin@trevifin.com sito internet Capitale sociale Euro ,00 Int. Vers. Registro Imprese Forlì Cesena, Codice Fiscale e Partita IVA: C.C.I.A.A. R.E.A. n

5 Stefano Trevisani, CEO of TREVI Group stated: The achievement of this important milestone represents a significant testimony of the technological excellence of TREVI Group. The execution of this project continues to be an integral part of the project management skills brought forward by the Group in executing large and complex contracts. Work is being carried out successfully with the highest standard of safety registering the most efficient rates of production. We are absolutely pleased to provide the best services and technology in the industry and strive to continue the successful execution of this important and broad project of the US Corps of Engineers. Work & Safety Environment & Efficiency Recognition About Wolf Creek Dam Foundation Remediation Project: The scope of the work is the installation of a concrete barrier wall at Wolf Creek Dam in Russell County, Kentucky. The concrete barrier wall is the primary element of the Wolf Creek Dam Seepage Rehabilitation Project. The wall will be a combination of secant piles and rectangular panels installed through the earthen embankment to a depth of about 275 feet. It will go deep into the foundation rock to effectively cut off seepage though the limestone. Link to the press release of the US Corps of Engineers: About TREVI GROUP: Trevi Group is a worldwide leader in the field of soil engineering (special foundations, tunnel excavation, soil consolidation and the building and marketing of special rigs and equipment relevant to this engineering sector); the Group is also active in the drilling sector (oil, gas and water) both in the production of plant and the supply of services, and it also builds automated underground car parks. The Group was established in Cesena in 1957 and today has more than 30 branches and is present in over 80 countries. Its success is due to the vertical integration of the main divisions making up the Group: Trevi, the division that supplies special services in the field of soil engineering, Petreven, the oil drilling division of the Group, Soilmec, the division that produces and develops plant and machinery for soil engineering and Drillmec the division that produces and develops drilling rigs (oil, gas and water). The parent company TREVI Finanziaria Industriale Spa has been listed on the Milan stock exchange since July The key financial figures for 2011 are: Total revenues of 1,061.4 million, EBITDA of million (margin of 11.2%), EBIT of 69.3 million (margin of 6.5%), and NET PROFIT of 25.7 million. More information can be found on the website: For further information: Investor Relations: Stefano Campana scampana@trevifin.com Josef Mastragostino jmastragostino@trevifin.com Cristina Trevisani crtrevisani@trevifin.com Group Communication Office: Franco Cicognani fcicognani@trevifin.com Press office: Studio Mailander TREVI Finanziaria Industriale S.p.A. Via Larga, Cesena (FC) (Italia) Tel Fax E mail trevifin@trevifin.com sito internet Capitale sociale Euro ,00 Int. Vers. Registro Imprese Forlì Cesena, Codice Fiscale e Partita IVA: C.C.I.A.A. R.E.A. n

6 Release For Immediate Release June 22, 2012 Contact: Bill Peoples, Milestone reached with completion of protective concrete embankment wall at Wolf Creek Dam JAMESTOWN, Ky. (June 22, 2012) The U.S. Army Corps of Engineers Nashville District reached a major milestone here this week at the Wolf Creek Dam Foundation Remediation Project when work crews installed the 433rd and final panel in completing the protective concrete embankment wall. While this wall does not create a water barrier through the dam s karst limestone foundation, it completes a major stage of construction that is critical to the final stage of construction the main barrier wall, which is scheduled to be completed by December The PCEW is a six-foot wide and up to 230 foot deep concrete wall through the dam s clay embankment down to top of rock. It extends 3,800 feet along the length of the embankment. Its purpose is to protect the embankment while the main barrier wall is being constructed. The PCEW was one of several complicated components on the project and its safe completion without any major complications is a significant achievement. Bill DeBruyn, resident engineer, said the entire Wolf Creek team has been working hard to reach this milestone. They felt a tremendous and well-deserved sense of accomplishment when the last concrete was placed for the PCEW, he said. Our contractor continues to work two shifts a day, six days a week in an effort to complete the project as soon as possible. The contractor, Treviicos-Soletanche Joint Venture, continues to install the main barrier wall and has completed more than 70 percent of the concrete piles that create it. These piles extend up to 275 feet deep through the embankment and well into the limestone to block openings in the rock. The main barrier wall must be completed before Lake Cumberland can be raised back to its normal levels. The contractor achieved another milestone this month when it reached 920,000 man-hours without an accident that would cause a worker to miss time on the job. Nashville District officials said a commitment to safety by Treviicos-Soletanche Joint Venture also contributed to timely completion of the PCEW. The foundation remediation began in 2008 when the Corps took aggressive action to reduce the risk of failure and to effectively cut off seepage through the limestone caused by erosion of the dam s foundation from water pressure in the reservoir. The Corps made an emergency decision in 2007 to maintain the lake at elevation 680 feet. Despite lower lake levels that have been maintained during construction, Lake Cumberland is still the third largest lake in Kentucky, and recreation opportunities for fishing, camping, and water sports remain highly accessible. For more news, information and updates please follow the U.S. Army Corps of Engineers Nashville District on Facebook at and Lake Cumberland at U.S. ARMY CORPS OF ENGINEERS NASHVILLE DISTRICT 801 Broadway, Nashville, Tenn